baber/WOPTO huggingface dataset:
Patent GB-499049-A (GB)
Title: Improvements in the manufacture and production of aliphatic polyhydroxy compounds of high molecular weight
IPC: C07C31/18
Filed: 1937-08-25
Abstract: Polyhydroxy compounds containing at least 6 carbon atoms, and one hydroxy group to each two carbon atoms are obtained from the residue left after the distillation of 1,3 butylene glycol from the hydrogenation product of aldol, by treatment with a mineral acid to decompose acetals and distillation under reduced pressure. The polyhydroxy compounds may be separated into fractions by a subsequent distillation; they contain hexanetriols and octane tetrols.  In an example the residue is distilled at 1-3 mm. pressure and the distillate is diluted with water and heated with 1-3 per cent of concentrated sulphuric acid; the acid is removed by lime or baryta and after evaporating the water, the remaining liquid is distilled fractionally in vacuo.  In another example, the preliminary distillation is omitted, the residue being treated directly with sulphuric acid.  During the distillation under reduced pressure, steam or other inert gas may be passed through the liquid; or the liquid may be distilled with steam or superheated steam.
Patent GB-791457-A (GB)
Title: Improvements in or relating to automatic fault identifying and blocking devices in automatic telecommunication systems
IPC: H04M3/08
Filed: 1955-08-12
Abstract: 791,457. Automatic exchange systems. ANULF, K. A. Aug. 12, 1955 [Aug. 13, 1954], No. 23346/55. Class 40 (4). Selectors are arranged to return to a control circuit signals indicative of their proper operation and the control circuit is arranged to hold the selectors irrespective of the condition of the calling line and to operate indicating means if the signal is not received within a predetermined time. A calling subscriber establishes in known manner a connection to a register REG over a line-finder S and a register connector RFV. In the register line and hold relays R1 R2 operate in the usual way, R2 providing holding circuits for the finder switching relay S1 and the register connecting relay RFV1. The dialled digits set switches VI, V2 ... in the usual manner whereupon relay V0 operates to complete an interrupter circuit for relay R5. The latter steps the counting switch V10 and pulses relay G11 to step the first selector IGV. When the setting of switch V10 agrees with that of VI, R4 operates to interrupt the pulsing circuit for R5 and connects an impulse source to the timing switch T. Meantime the selector IGV hunts by means not shown over the relevant group and when a free outlet is found relays G14, G22 operate in series over the test wire. During the pick-up time of relay G22 negative potential reverted over the b-wire brings up R3 which releases R4 whereupon the timing device T is restored. In the event of a call being blocked owing to congestion, if the caller hangs up during the first ten seconds the whole connection is released. Otherwise after ten seconds the timing device contact T1 operates R6 which holds the register connecting relay RFV1 even though the calling subscriber subsequently hangs up. When the latter does so, however, R1 and R2 release S1 in the linefinder so that the calling subscriber is free. When eventually the congestion clears and the switch finds a free outlet and reverts the negative signal over the b-wire to operate R3, relay R4 releases, followed by T1, R6 and RFV1 and the whole connection is released. If, however, the hold-up is due to a fault, no signal is reverted and after 10 minutes contact T2 operates R7 which locks, holds R4 and raises an alarm. The action of contact T1 may be dispensed with so that holding of the switch train takes place immediately. In equipment comprising a plurality of register-controllers taken into use cyclically only a few may be equipped for fault detection as described above. The invention is also applicable to revertive impulse systems, failure to receive reverted impulses causing fault indication. The invention is further applicable to systems having a separate control circuit per stage. In this case preceding switching stages may be released when a fault occurs.
Patent GB-1132375-A (GB)
Title: Improvements relating to disc brakes
IPC: F16D65/00
Filed: 1966-05-25
Abstract: 1,132,375. Disc brakes. DAIMLER BENZ A.G. 25 May, 1966 [28 May, 1965], No. 23365/66. Heading F2E. In a brake disc construction, a bell-shaped supporting part 12 is connected to the revolving wheel body and an annular ring-shaped part 10 of the brake disc is located on the supporting part 12, the brake ring 10 being provided as a separate component on the support part 12 by the provision of a sinusoidal tooth system provided on the periphery of the supporting part 12 which co-operates with a complementary surface on the inner periphery of the brake ring 10 to locate the two parts in the peripheral and in the axial direction. A wire circlip 16 is arranged between the two parts to locate them axially. The brake ring is made preferably of a chrome-copper alloy. In a further embodiment (not shown) the brake disc is divided into a plurality of annular parts (e.g. 4) of substantially equal thickness, the annular parts being fastened together by adhesive means for example. The brake disc may be actuated by brake pads urged into contact with the brake disc by at least two pressure medium actuated brake calipers, each caliper being associated with a separate pressure medium system.
Patent GB-360056-A (GB)
Title: Improvements in or relating to dental bridgework
IPC: A61C13/265
Filed: 1930-08-05
Abstract: 360,056. Artificial teeth. HADDAN, R., 31, Bedford Street, Strand, London.- (Columbus Dental Manufacturing Co. : Wager Street, Columbus, Ohio, U.S.A.) Aug. 5, 1930, No. 23427. [Class 81 (ii).] D e n t a I bridgework comprises an attachment or casting 10, 11 for engaging the natural teeth b, c and an intermediate false tooth (or teeth) with a separate, root 15 which is con nected with the corresponding part 14 of the attachment by a dovetail connection inclined downwardly from the lingual to the outer surface of the tooth so that the root may be engaged by an outward and downward sliding movement. The form of the counterparts of the connection is shown, for example at 16 .. 19 and 20, 23, 24.
Patent GB-1094961-A (GB)
Title: Olefin polymerization process
IPC: C08F210/16
Filed: 1965-06-02
Abstract: A sulphur vulcanizable rubbery terpolymer of ethylene propylene and a copolymerizable diene is prepared by dissolving the monomers in a pre-chilled volatile inert organic solvent, passing the resultant solution through a number of liquid full mixing zones wherein the solution is intensely mixed and a number of reaction zones wherein the solution is mixed and cooled to 50 to 140 DEG  F., the mixing and reaction zones being connected alternatively in series and each reaction zone being immediately downstream of an associated mixing zone and having a larger volume than this mixing zone, introducing separate solutions of catalyst forming ingredients in the solvent into the first mixing zone so as to form a catalyst in situ in the presence of the monomers and start exothermic polymerization of the monomers, the resulting polymerization mixture passing immediately into the first reaction zone, introducing further monomer solution and catalyst forming ingredient solution into the second mixing zone so that it becomes intimately mixed with partly polymerized mixture withdrawn from the first mixing zone and forms further catalysts therein, the resulting mixture immediately passing into the second reaction zone, wherein the polymerization advances and recovering the polymer from the polymerization mixture issuing from the final reaction zone.  The reaction zones may be vessels which are externally cooled, the inner surfaces of their outer walls being continuously scraped free of polymer to ensure adequate heat conduction therethrough.  It is preferred that each reaction zone has from 20 to 200 times the volume of the polymerization mix flowing therethrough in one minute, that each mixing zone has a volume which is from 0.05 to 1.5% of the volume of its associated reaction zone and that 20 to 80% of the monomers are polymerized in the first reaction zone and that the polymerization mixture leaving the final reaction zone comprises 40 to 90% solvent, 5 to 12% dissolved polymer and 1 to 50% unreacted monomers.  The polymerization mixture leaving the final zone may be flashed off to a vapour stream of solvent, unreacted monomers and gaseous impurities e.g. propane and methane, this stream being divided into a major part which is recycled to the first reactor and a minor part which is again divided into a part which is vented from the system and a part which is scrubbed in the solvent to remove monomers which are recycled to the first reactor. The prepared dienes are dicyclopentadiene. 1 - 4 - hexadiene, methylene norbornylene and cyclo-octadiene-1,5.  The catalyst is a transition metal compound e.g. vanadium oxytrichloride or tetrachloride together with an organoaluminium compound e.g. an alkyl aluminium sesquihalide and is preferably accompanied by an activator e.g. quinones, azoxybenzene, sulphur, phosphorus trichloride or preferably a nitroalkane such as nitropropane. Apparatus for carrying out the process is described.
Patent GB-866550-A (GB)
Title: Improvements relating to centrifugally operating clutches
IPC: F16H61/662
Filed: 1958-07-22
Abstract: 866,550. Gearing for stopping and starting machinery. WOLSELEY ENGINEERING Ltd. (V-Plex Clutch Corporation). July 22, 1959 [July 22, 1958], No. 23446/58. Class 80 (2). A pulley for a V-belt drive comprises a fixed disc 4 and an axially movable disc 5, the latter being moved inwardly at a predetermined speed to engage the belt 6 by centrifugal masses 18 housed in the space between a drum 14 on the driving spindle 7 and the outer inclined face 16 of disc 5. The masses 18 are held in position by a garter spring 21 and the discs 4, 5 are normally held apart, so that the drive is disconnected, by a coil spring 12.
Patent GB-585981-A (GB)
Title: Improvements relating to tubular heat interchange apparatus
IPC: F28F1/36
Filed: 1944-11-24
Abstract: 585,981. Heat-exchangers. SERCK RADIATORS, Ltd., and UPTON, H. E. Nov. 24, 1944, No. 23467. [Class 64 (iii)] An element for a heat-exchanger comprises at least one pair of coaxial metal tubes a, b with a helical member c located in the annular space between them and bonded to one or both of the tubes to form secondary heat conductive surfaces. The member c is in the form of a coiled wire, Fig. 1, a corrugated narrow ribbon or wire, Fig. 3, or a plurality of radially-disposed U-shaped wire lengths soldered &c. to the inner tube, so as to permit fluid flow through the said member as well as between its convolutions. Specifications 231,682, [Class 64 (iii)], and 504,706 are referred to.
Patent GB-798330-A (GB)
Title: Improvements in or relating to the splicing of paper during unwinding from separate rolls
IPC: B65H21/02
Filed: 1955-08-16
Abstract: 798,330. Feeding webs. SCHNELLPRESSENFABRIK FRANKENTHAL ALBERT & CIE AKT.-GES. Aug. 16, 1955 [Aug. 16, 1954]. No. 23531/55. Class 100(1) [Also in Group XL(b)] In order to join the end of a printed web of paper 13 with a new roll the relative speeds of the rolls and web are controlled by means of tachd-generators sensing peripheral speed of the roll and linear speed of the web and photo-cells detecting the relative phase of recurring optical patterns on the web and roll. The tachogenerators 11, 11<SP>1</SP> control a motor 10 which adjusts an infinitely variable gear 18 controlling the speed of drive of the roll 2 by the shaft 8 through belting 8. The photo sensitive arrangements A, B each consist of a light source and a photo-cell receiving light reflected from the edge of the roll and the web. The output pulses produced in the two cells by the reference marks are amplified and used to control the input to a differential 5 from a motor 14, thus slowing or accelerating the drive to the roll 2 until it is in running in phase with the travelling web when the two are brought into contact. Specification 722,534 is referred to.
Patent GB-321472-A (GB)
Title: Improvements in and relating to the manufacture of sheet metal articles and particularly metal drums and like containers
IPC: B21D51/40
Filed: 1928-08-15
Abstract: 321,472. Jessop, W., Drums, Ltd., and International Paint & Compositions Co., Ltd. Aug. 15, 1928. Flanging.-A bung-hole bush &c. c having a flange d is secured to a sheet-metal drum by inserting the flange in a recess in the wall of the drum and forming a fold e on the outside of the flange. The back c may be screw-threaded or plain, and a sealing ring g having holes for a sealing wire to pass through may be enclosed by the fold e. A packing washer having a cylindrical projection may be inserted between the flange d and the part a and the cylindrical projection is folded outwardly over the part a during the pressing operation. In some cases the packing washer may be a scored disc which is pierced on the insertion of a tap &c. and acts as a bung.
Patent GB-646778-A (GB)
Title: Improvements in or relating to dry- shaving apparatus
IPC: B26B19/04
Filed: 1946-08-08
Abstract: 646,778. Dryshavers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 8, 1946, No. 23543. Convention date, Nov. 4, 1942. [Class 131] In a dry shaver the apertures in the cutting plate are grouped in different parts of the plate according to size and the cutting member is adjustable to cooperate with all or a group of the apertures. As shown the cutting member 6 has cutting edges 7 which reciprocate behind the cutting plate 1 in cooperation with the apertures 2, and on reversal of the cutting member, cutting edges 8 co-operate with apertures 3. The apertures may be tapered slots as shown at 29 and auxiliary apertures 20 may be provided to increase the cutting efficiency. The aperture in the group which is not being used at any particular time may be blocked by covering them with a thin, removable cap or the cutting member may be provided with an uninterrupted blocking surface. The cutting member may be provided with one set of cutting edges which co-operate with all of the apertures in the cutting plate at the same time. A modification is described in which a cutting member rotates behind a circular cutting plate.
Patent GB-736805-A (GB)
Title: Improvements in or relating to artificial dentures
IPC: A61C13/24
Filed: 1952-09-19
Abstract: 736,805. Artificial teeth. PORTER, M. M. Dec. 21, 1953 [Sept. 19, 1952], No. 23590/62. Class 81 (2). The gum-engaging portion of an artificial denture, particularly a lower denture, is made in several parts which are resiliently connected together to allow for relative movement during eating and speaking. The denture may be made as a complete whole and the front part 3 then separated by cutting it from the side parts 4. A coiled spring 7 has its ends embedded in the material of the two adjacent parts 3, 4 and its intermediate section is housed in a recess sufficiently large to give freedom of movement. The recess is either closed by a plate 19, which may be hinged, or is filled with resilient synthetic resin or rubber. A straight spring 8 is also provided below the spring 7 and has the greater part of its length in channels sufficiently large to allow the desired movement. Other forms of springs may be used or one, in each pair, may be replaced by a simple resilient block.
Patent GB-886074-A (GB)
Title: Improvements in or relating to liquid atomizer heads for steam desuperheaters
IPC: B05B1/32
Filed: 1960-07-06
Abstract: 886,074. Spray-producers. SOC. FRANCAISE DES REGULATEURS UNIVERSELS ARCA. July 6, 1960 [April 25, 1960], No. 23632/60. Class 69 (3). A liquid atomizer for steam desuperheaters comprises a helical spring 3 screwed at one end to a body 1 and closed at the opposite end by a plug 6. The turns of the spring are normally in contact but when liquid under pressure is supplied to the body the turns are forced apart and atomized liquid is emitted as a helical sheet which is formed into zones 8 by circumferentially spaced deflectors 7.
Patent GB-643349-A (GB)
Title: Improvements in or relating to automatic weaving looms provided with four wefts and with shuttle change mechanism
IPC: D03D45/34
Filed: 1947-08-27
Abstract: 643,349. Automatic shuttle-changing mechanism. DIEDERICHS, LES FILS DE G. Aug. 27, 1947, No. 23742. Convention date, March 6, 1944. [Class 142(iii)] A fresh shuttle is transported to the shuttle box by a carrier 10 which is located under the end compartment D of a four colour magazine by a stop screw 30, and under the end compartment A by a latch 15 against which a projection 18 rests; for the intermediate compartments B, C, the carrier is located by another latch which has two noses 26, 27.
Patent GB-688979-A (GB)
Title: Improvements in or relating to washing and screening sieves
Inventor: FOWLER CECIL
IPC: B07B1/46
Filed: 1950-09-28
Abstract: 688,979. Sifting-apparatus. DON VALLEY ENGINEERING CO., Ltd. Aug. 30, 1951 [Sept. 28, 1950], No. 23821/50. Class 117 A washing and screening sieve for coal and fines is formed of a number of sections each comprising longitudinally extending continuous parallel wires or rods 11 having at intervals doubled back loops 15, 16 forming steps reinforced at the crest of the steps by transverse wires or rods 17, 18 passing through the loops. The longitudinal wires or rods 11 are spaced apart by spacers held between them or by bosses formed on them, and clamped between side frame members 12 by the transverse bars. The steps retard the flow of water and coal along the sieve, ensuring better washing, and the coal is tumbled over the crests of the steps, ensuring better screening.
Patent GB-797545-A (GB)
Title: Improvements in or relating to ball joints
IPC: F16C11/06
Filed: 1955-08-18
Abstract: 797,545. Hinges and pivots. COSSEL, H von, and LANGEN V., [trading as EHRENREICH & CIE A.]. Aug. 18, 1955 [Oct. 21, 1954], No. 23843/55. Class 65(2) A ball joint having a solid or a two part ball head and a two part socket has the parts urged into engagement by a plurality of spring mounted in one or each of the sprocket parts or in one head part. Fig. 1 shows two socket parts 2 each with springs 9 pressing against a housing 1 and a closure cap 5. Grease in a space 7 below the cap 5 can reach the bearing surfaces through a hole 6 in the adjacent socket part. A dust cover 10 seals the stem 4. A rubber or like buffer may be placed between the cap 5 and the adjacent socket part 2. One or both of the parts 2 can be made of rubber or like and one socket part may have a lining of rubber or like. In Fig. 6, a rubber ring 16 is arranged between springs 9 mounted in bores or in an annular groove in one head part. A steel plate 23 may be placed between the head parts. The number of springs can be varied depending on the requirements of the joint.
Patent GB-360489-A (GB)
Title: Process for the preparation of ammonium sulphate and nitrogen
IPC: B65D49/00
Filed: 1930-08-08
Abstract: Ammonium sulphate is prepared by oxidizing ammonium sulphite with oxygen or an oxygen containing gas in the presence of soluble cobalt-sulphito-ammonia complex salts such as the compound Co(NH3)4(SO3)2NH4-3H2O or by bringing ammonia, oxygen and sulphur dioxide into contact with such complex salts or with an ammoniacal solution of a cobalt salt under conditions resulting in the production of such complex salts.  The solutions should preferably retain an alkaline reaction, say pH8 to 9 during the process and a solution of ammonium carbonate may be used instead of ammonia.  If air is used as a source of oxygen, nitrogen is obtained as a residual product. Ammonium sulphate may be crystallized from the resulting solution, the crystals being washed free from cobalt and the combined wash liquors and mother liquor being returned to the process. Alternatively, the resulting solution may be freed from cobalt, before crystallization by precipitation of the cobalt for example, as sulphide by hydrogen or ammonium sulphide, the sulphide precipitate being oxidized either electrolytically or by air, ozone or hydrogen peroxide to produce a cobalt solution which is returned to the process.  Iron, manganese, nickel, cerium, vanadium or other mineral salts or mixtures of these may be used in conjunction with the cobalt-sulphito-ammonia complex.  The gaseous mixture of ammonia, sulphur dioxide and air may be brought into contact with the ammoniacal solution of a cobalt salt in counter-current employing a number of small chambers arranged one above the other and connected together by inlet and outlet pipes, each chamber being filled with pieces of inactive material. Examples are given.
Patent GB-266399-A (GB)
Title: Improvements in or relating to switching mechanisms for use in telephone or like systems
IPC: H01H67/16
Filed: 1925-09-24
Abstract: 266,399. Automatic Telephone Manufacturing Co., Ltd., (Automatic Electric Co.). Sept. 24, 1925. Electromagnets. - The mounting plate 208 of the laminated core 207 is secured to the lower part of the adjustable heel-piece 201, 202. When the magnet is energized with an air-gap gauge inserted, the armature will attract the part 202 of the heel-piece, which is then locked in adjusted position.
Patent GB-501597-A (GB)
Title: Improvements relating to artificial flies for fishing
IPC: A01K85/08
Filed: 1937-09-01
Abstract: 501,597. Artificial flies. DEANS, R. C. Sept. 1, 1937, No. 23881. [Class 48] A wingless . artificial fly has a hackle consisting of a bunch of cellulosic or like synthetic fibres fastened to a wingless body. A suitable length of fibre may be coiled or wound on a former to form a bunch which is secured to the body and the loops cut; or short lengths, which may be slit, are bunched and secured in place. The hook 13 is first bound with material to con. stitute the body, and a silk thread 14 is wound round the neck of the shank and the end of the bunch 1, and the loops are then cut. The bunch may be twisted into a figure-eight before being, secured. A few strands of similar material may be applied to form a tail. The cellulosic material may be dyed and may be reinforced by silk threads, hair, gut, or feathers.
Patent GB-664833-A (GB)
Title: Improvements in, or relating to, pyrophoric lighters
IPC: F23Q2/44
Filed: 1948-09-11
Abstract: 664,833. Frictional igniters. SCHWAAR, R. Sept. 11, 1948 [Sept. 27, 1947; March 2, 1948], Nos. 23912/48 and 23913/48. Class 75(iii) To regulate the fuel supply to the upper end of the wick of a pyrophoric lighter adjustable means are provided in a recess 6 in the top 2 of the lighter body 1, so that a deformable wick-encircling washer 10 which seats on the floor 7 of the recess 6 can be squeezed to strangle the wick 8 which passes through a hole in the floor 7 to the reservoir. A hollow adjustable screw 9 which contains a sleeve 11 of absorbent material and through which the wick 8 passes is screwed into the recess 6 to press on the washer 10. The top of such hollow screw serves as the burner portion of the lighter. For the periodic venting of the fuel reservoir there may be formed in the top 2 a duct opening conically on to the reservoir, whereby on opening the snuffer cap the reservoir is automatically connected with the outside air, but preferably the venting is effected by a manually-operated valve, Fig. 4, located in a bore in the top 2 normally hidden by the lid of the lighter. A rod 16, passing through a hollow body 15 in said bore. carries a head 18 and washer 22 at its lower end and is normally urged upwards by a spring 20, so that the washer 22 is held up against an apertured seat 23 attached to the body 15. On pressing down the rod 16 the washer 22 is pushed away from the seat 23, and flats on the rod 16 enter the apertures in the top of the body 15 and in the seat 23 to connect the reservoir with the atmosphere. A spring housed in the top 2 holds the lid in its open or closed position.